Network Access Flashcards
What is the primary effect of the spanning-tree portfast command?
It minimizes spanning-tree convergence time.
What occurs when PortFast is enabled on an interface that is connected to another switch?
Spanning-tree fails to detect a switching loop increasing the likelihood of broadcast storms.
Which QoS Profile is selected in the GUI when configuring a voice over WLAN deployment?
Platinum
Which unified access point mode continues to serve wireless clients after losing connectivity to the Cisco Wireless LAN Controller?
Flexconnect
Which mode must be used to configure EtherChannel between two switches without using a negotiation protocol?
On
Two switches are connected and using Cisco Dynamic Trunking Protocol. SW1 is set to Dynamic Auto and SW2 is set to Dynamic Desirable. What is the result of this configuration?
The link becomes a trunk port.
A Cisco IP phone receives untagged data traffic from an attached PC. Which action is taken by the phone?
It allows the traffic to pass through unchanged.
Which design element is a best practice when deploying an 802.11b wireless infrastructure?
allocating nonoverlapping channels to access points that are in close physical proximity to one another.
Which command is used to enable LLDP globally on a Cisco IOS ISR?
lldp run
In a CDP environment, what happens when the CDP interface on an adjacent device is configured without an IP address?
CDP operates normally, but it cannot provide IP address information for that neighbor.
When configuring an EtherChannel bundle, which mode enables LACP only if a LACP device is detected?
Passive.
Which two commands can you use to configure an actively negotiate EtherChannel?
channel-group 10 mode desirable
channel-group 10 mode active
How does STP prevent forwarding loops at OSI Layer 2?
Port Blocking
Which two statements about VTP are true?
All switches must use the same VTP version.
All switches must be configured with the same VTP domain name.
Which type does a port become when it receives the best BPDU on a bridge?
The root port.
Which value can you modify to configure a specific interface as the preferred forwarding interface?
The Port Priority
What are two reasons a network administrator would use CDP?
to verify Layer 2 connectivity between two devices when Layer 3 fails.
to obtain the IP address of a connected device in order to telnet to the device.
What are two benefits of using VTP in a switching environment?
It maintains VLAN consistency across a switched network.
It allows VLAN information to be automatically propagated throughout the switching environment.
Which three statements are typical characteristics of VLAN arrangements?
Connectivity between VLANs requires a Layer 3 device.
Each VLAN uses a separate address space.
A switch maintains a separate bridging table for each VLAN.
What criteria is used first during the root port selection process?
lowest path cost to the root bridge.
Which statement about VLAN configuration is true?
The switch must be in VTP server or transparent mode before you can configure a VLAN.
The SW1 interface g0/1 is in the down/down state. What are two reasons for the interface condition?
The interface is error-disabled.
There is a speed mismatch.
Which two conditions must be met before SSH operates normally on a Cisco IOS switch?
The switch must be running a k9 (crypto) IOS image.
The ip domain-name command must be configured on the switch.
An engineer requires a switch interface to actively attempt to establish a trunk link with a neighbor switch. What command must be configured?
switchport mode dynamic desirable
Which technology prevents client devices from arbitrarily connecting to the network without state remediation?
802.1x
An engineer must configure traffic for a VLAN that is untagged by the switch as it crosses a trunk link. Which command should be used?
switchport trunk native vlan 10
What is the benefit of configuring PortFast on an interface?
After the cable is connected, the interface is available faster to send and receive user data.
What is a requirement when configuring or removing LAG on a WLC?
The management interface must be reassigned if LAG is disabled.
Which type of port is used to connect the wired network when an autonomous AP maps two VLANs to its WLANs?
Trunk.
